摘要
以实验室自制的30%戊唑醇.甲基硫菌灵和40%戊唑醇.多菌灵悬浮剂为对象,初步研究了pH值、温度、水质、研磨时间对农药悬浮剂粒子大小、粒度分布及悬浮率的影响,其中粒子大小、粒度分布分别以中位径和跨距2个指标来反映。结果表明,以上4种因素的变化对30%戊唑醇.甲基硫菌灵和40%戊唑醇.多菌灵悬浮剂的中位径影响均很小,但粒度分布和悬浮率均受到不同程度的影响。随着pH值的变化,2种体系跨距波动的幅度并不明显,当pH值分别为10、6时,30%戊唑醇.甲基硫菌灵和40%戊唑醇.多菌灵悬浮剂的悬浮率较低;随着贮存温度的升高,2种悬浮剂的跨距均有所增大,悬浮率均降低;随着水质的改变,跨距差异均不大,悬浮率高低呈蒸馏水>超纯水>自来水的趋势,但差异不明显;随着研磨时间的延长,跨距均先显著降低随后趋于平缓,悬浮率则先升高后降低再升高,最后趋于平缓。
This experiment studied the impact of pH, temperature, water quality and milling time on the particle size distribution and suspension percentage of different pesticide SC,including 30 % tebuconazole · thiophanate-methyl SC and 40% tebuconazole · carbendazim SC, developed in the laboratory. Particle size and distribution were reflected by median-particle-size and span, respectively. The results showed that the impact of the factors above on the median-particle-size of the two SC was little,but they had a certain impact on the particle size distribution and suspension percentage. Along with the change of pH,fluctuation range of span was not obvious,but suspension percentage of two systems was lower when temperature increased,span of two systems had a pH was 10 and 6, respectively; As the storage trend of increasing, and suspension percentage reduced;With the change of water quality,span changed a little,and the trend of suspension per centage showed as distilled water〉ultrapure water〉tap water, but the difference was not obvi ous; With the extension of milling off,but suspension percentage rose trend was gentle. time, span first reduced significantly and subsequently leveled obviously at first, then lowered, after that rose, and at last the
出处
《河南农业科学》
CSCD
北大核心
2013年第2期89-92,共4页
Journal of Henan Agricultural Sciences
基金
山东省自然科学基金项目(ZR2012CQ015)
关键词
悬浮剂
PH值
温度
水质
研磨时间
粒子大小
粒度分布
悬浮率
suspension concentrate（SC）
pH value
temperature
water quality
milling time
particle size
particle size distribution
suspension percentage
